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<h1>examples/canvasInteract/canvasInteract.cpp</h1><a href="canvasInteract_8cpp.html">Go to the documentation of this file.</a><div class="fragment"><pre class="fragment"><a name="l00001"></a>00001 <span class="comment">/*</span>
<a name="l00002"></a>00002 <span class="comment"> *      Copyright (C) 2011, 2012. PARP Research Group.</span>
<a name="l00003"></a>00003 <span class="comment"> *      &lt;http://perception.inf.um.es&gt;</span>
<a name="l00004"></a>00004 <span class="comment"> *      University of Murcia, Spain.</span>
<a name="l00005"></a>00005 <span class="comment"> *</span>
<a name="l00006"></a>00006 <span class="comment"> *      This file is part of the QVision library.</span>
<a name="l00007"></a>00007 <span class="comment"> *</span>
<a name="l00008"></a>00008 <span class="comment"> *      QVision is free software: you can redistribute it and/or modify</span>
<a name="l00009"></a>00009 <span class="comment"> *      it under the terms of the GNU Lesser General Public License as</span>
<a name="l00010"></a>00010 <span class="comment"> *      published by the Free Software Foundation, version 3 of the License.</span>
<a name="l00011"></a>00011 <span class="comment"> *</span>
<a name="l00012"></a>00012 <span class="comment"> *      QVision is distributed in the hope that it will be useful,</span>
<a name="l00013"></a>00013 <span class="comment"> *      but WITHOUT ANY WARRANTY; without even the implied warranty of</span>
<a name="l00014"></a>00014 <span class="comment"> *      MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the</span>
<a name="l00015"></a>00015 <span class="comment"> *      GNU Lesser General Public License for more details.</span>
<a name="l00016"></a>00016 <span class="comment"> *</span>
<a name="l00017"></a>00017 <span class="comment"> *      You should have received a copy of the GNU Lesser General Public</span>
<a name="l00018"></a>00018 <span class="comment"> *      License along with QVision. If not, see &lt;http://www.gnu.org/licenses/&gt;.</span>
<a name="l00019"></a>00019 <span class="comment"> */</span>
<a name="l00020"></a>00020 
<a name="l00040"></a>00040 <span class="preprocessor">#include &lt;stdio.h&gt;</span>
<a name="l00041"></a>00041 <span class="preprocessor">#include &lt;stdlib.h&gt;</span>
<a name="l00042"></a>00042 <span class="preprocessor">#include &lt;iostream&gt;</span>
<a name="l00043"></a>00043 <span class="preprocessor">#include &lt;QDebug&gt;</span>
<a name="l00044"></a>00044 
<a name="l00045"></a>00045 <span class="preprocessor">#include &lt;QVApplication&gt;</span>
<a name="l00046"></a>00046 <span class="preprocessor">#include &lt;QVVideoReaderBlock&gt;</span>
<a name="l00047"></a>00047 <span class="preprocessor">#include &lt;QVDefaultGUI&gt;</span>
<a name="l00048"></a>00048 <span class="preprocessor">#include &lt;QVImageCanvas&gt;</span>
<a name="l00049"></a>00049 
<a name="l00050"></a>00050 <span class="preprocessor">#include &lt;qvipp.h&gt;</span>
<a name="l00051"></a>00051 
<a name="l00053"></a>00053 
<a name="l00054"></a>00054 <span class="keyword">class </span>MyImageCanvas : <span class="keyword">public</span> <a class="code" href="classQVImageCanvas.html" title="Display widget for QVImage objects and other data types.">QVImageCanvas</a> {
<a name="l00055"></a>00055     <span class="keyword">public</span>:
<a name="l00056"></a>00056         MyImageCanvas(QString name) : <a class="code" href="classQVImageCanvas.html" title="Display widget for QVImage objects and other data types.">QVImageCanvas</a>(name) {} ;
<a name="l00057"></a>00057         <span class="keywordtype">void</span> <a class="code" href="classQVImageCanvas.html#a0040df759739f50e9235547f1055844a" title="Display user defined data types method.">custom_viewer</a>(){        
<a name="l00058"></a>00058             <a class="code" href="classQVPolyline.html" title="Polyline representation.">QVPolyline</a> poly = getPropertyValue&lt;QVPolyline&gt;(<span class="stringliteral">&quot;poly select&quot;</span>);
<a name="l00059"></a>00059             <a class="code" href="classQVImageCanvas.html#adcc6632a6181cc4d9f9ef3b2e2fb6b22" title="Returns a QVPainter object to perform custom drawings in the canvas.">getQVPainter</a>()-&gt;setPen(Qt::yellow);
<a name="l00060"></a>00060             <a class="code" href="classQVImageCanvas.html#adcc6632a6181cc4d9f9ef3b2e2fb6b22" title="Returns a QVPainter object to perform custom drawings in the canvas.">getQVPainter</a>()-&gt;setBrush(QBrush(Qt::magenta, Qt::DiagCrossPattern));
<a name="l00061"></a>00061             <span class="keywordflow">for</span>(<span class="keywordtype">int</span> i=0; i&lt;poly.size(); i++) {
<a name="l00062"></a>00062                 <a class="code" href="classQVImageCanvas.html#adcc6632a6181cc4d9f9ef3b2e2fb6b22" title="Returns a QVPainter object to perform custom drawings in the canvas.">getQVPainter</a>()-&gt;drawEllipse(poly[i].x()-10, poly[i].y()-10, 20, 20);
<a name="l00063"></a>00063                 <a class="code" href="classQVImageCanvas.html#adcc6632a6181cc4d9f9ef3b2e2fb6b22" title="Returns a QVPainter object to perform custom drawings in the canvas.">getQVPainter</a>()-&gt;<a class="code" href="classQVPainter.html#af213d51b59f8ed1254adb8f2df8f4f98" title="Draws text in a given pixel position of the QVImageCanvas which does not scale with...">drawTextUnscaled</a>(poly[i], QString(<span class="stringliteral">&quot;Point %1&quot;</span>).arg(i));
<a name="l00064"></a>00064             }
<a name="l00065"></a>00065             <a class="code" href="classQVImageCanvas.html#adcc6632a6181cc4d9f9ef3b2e2fb6b22" title="Returns a QVPainter object to perform custom drawings in the canvas.">getQVPainter</a>()-&gt;setBrush(QBrush(Qt::magenta, Qt::NoBrush));
<a name="l00066"></a>00066         }
<a name="l00067"></a>00067 };
<a name="l00068"></a>00068 
<a name="l00069"></a>00069 <span class="keyword">class </span>MyWorker: <span class="keyword">public</span> <a class="code" href="classQVProcessingBlock.html" title="Base class for Block threads.">QVProcessingBlock</a> {
<a name="l00070"></a>00070     <span class="keyword">public</span>:
<a name="l00071"></a>00071         MyWorker(QString name = QString()): <a class="code" href="classQVProcessingBlock.html" title="Base class for Block threads.">QVProcessingBlock</a>(name) {
<a name="l00072"></a>00072             addProperty&lt; QVImage&lt;uChar,1&gt; &gt;(<span class="stringliteral">&quot;Input image&quot;</span>, inputFlag|outputFlag);
<a name="l00073"></a>00073             addProperty&lt; QVImage&lt;uChar,1&gt; &gt;(<span class="stringliteral">&quot;Output image&quot;</span>, outputFlag);
<a name="l00074"></a>00074             addProperty&lt;QRect&gt;(<span class="stringliteral">&quot;input rectangle&quot;</span>, inputFlag);
<a name="l00075"></a>00075             addProperty&lt;QVPolyline&gt;(<span class="stringliteral">&quot;input polyline&quot;</span>, inputFlag);
<a name="l00076"></a>00076         }
<a name="l00077"></a>00077 
<a name="l00078"></a>00078         <span class="keywordtype">void</span> <a class="code" href="classQVProcessingBlock.html#a0283c799776e0c938538de0b0ae6b463" title="Function to be defined in subclasses with processing code.">iterate</a>() {
<a name="l00079"></a>00079             <a class="code" href="classQVImage.html">QVImage&lt;uChar&gt;</a> image = getPropertyValue&lt; QVImage&lt;uChar,1&gt; &gt;(<span class="stringliteral">&quot;Input image&quot;</span>);
<a name="l00080"></a>00080             QRect rect = getPropertyValue&lt;QRect&gt;(<span class="stringliteral">&quot;input rectangle&quot;</span>);
<a name="l00081"></a>00081             <a class="code" href="classQVPolyline.html" title="Polyline representation.">QVPolyline</a> poly = getPropertyValue&lt;QVPolyline&gt;(<span class="stringliteral">&quot;input polyline&quot;</span>);
<a name="l00082"></a>00082             <a class="code" href="classQVImage.html">QVImage&lt;uChar&gt;</a> dest = image;
<a name="l00083"></a>00083 
<a name="l00084"></a>00084             <span class="comment">// Darken ROI area (by adding 0 to each pixel, but scaling dividing by 2^1:</span>
<a name="l00085"></a>00085             <span class="keywordflow">if</span> (rect != QRect()) image.<a class="code" href="classQVGenericImage.html#a2e01c2584cee10559bf1aac1ca7e287b" title="Set the region of interest of the image.">setROI</a>(rect);
<a name="l00086"></a>00086             <a class="code" href="group__qvippIAALO.html#ga79125dd2c16c07ab21c9bf8ca78a7583" title="QVision wrapper function for IPP&amp;#39;s ippiAddC_8u_C1RSfs.">AddC</a>(image, 0, dest, 1, QPoint(rect.x(), rect.y()));
<a name="l00087"></a>00087             dest.resetROI();
<a name="l00088"></a>00088 
<a name="l00089"></a>00089             <span class="comment">// Undo it arount input polyline&#39;s points:</span>
<a name="l00090"></a>00090             <span class="comment">// std::cout &lt;&lt; poly &lt;&lt; std::endl;</span>
<a name="l00091"></a>00091             <span class="keywordflow">for</span> (<span class="keywordtype">int</span> i = 0; i &lt; poly.size(); i++)
<a name="l00092"></a>00092                 <span class="keywordflow">for</span> (<span class="keywordtype">int</span> x = poly[i].x()-3; x &lt;= poly[i].x()+3; x++)
<a name="l00093"></a>00093                     <span class="keywordflow">for</span> (<span class="keywordtype">int</span> y = poly[i].y()-3; y &lt;= poly[i].y()+3; y++)
<a name="l00094"></a>00094                         <span class="keywordflow">if</span> ( (x &gt;= 0) &amp;&amp; (x &lt; static_cast&lt;int&gt;(image.<a class="code" href="classQVImage.html#ad0f2758702ee4d96d538aa353ae81bb7" title="Overloaded function from QVGenericImage::getCols().">getCols</a>())) &amp;&amp; (y &gt;= 0) &amp;&amp; 
<a name="l00095"></a>00095                              (y &lt; static_cast&lt;int&gt;(image.<a class="code" href="classQVImage.html#a55e71ad628f450ee82bb4226cb62ec17" title="Overloaded function from QVGenericImage::getRows().">getRows</a>())) )
<a name="l00096"></a>00096                              dest(x, y) = image(x, y);
<a name="l00097"></a>00097 
<a name="l00098"></a>00098             setPropertyValue&lt; QVImage&lt;uChar,1&gt; &gt;(<span class="stringliteral">&quot;Output image&quot;</span>, dest);
<a name="l00099"></a>00099         };
<a name="l00100"></a>00100 };
<a name="l00101"></a>00101 
<a name="l00102"></a>00102 <span class="keywordtype">int</span> main(<span class="keywordtype">int</span> argc, <span class="keywordtype">char</span> *argv[]) {
<a name="l00103"></a>00103     <a class="code" href="classQVApplication.html" title="Main class for QVision applications.">QVApplication</a> app(argc, argv, <span class="stringliteral">&quot;Example program for QVision library.&quot;</span> );
<a name="l00104"></a>00104     
<a name="l00105"></a>00105     MyWorker myWorker(<span class="stringliteral">&quot;worker&quot;</span>);
<a name="l00106"></a>00106     <a class="code" href="classQVVideoReaderBlock.html" title="This is a generic video input processing block for the QVision architecture.">QVVideoReaderBlock</a> camera(<span class="stringliteral">&quot;Video&quot;</span>);
<a name="l00107"></a>00107     MyImageCanvas imageCanvas(<span class="stringliteral">&quot;Features&quot;</span>);
<a name="l00108"></a>00108 
<a name="l00109"></a>00109     <a class="code" href="classQVDefaultGUI.html" title="Main user interface widget for QVision applications.">QVDefaultGUI</a> interface;
<a name="l00110"></a>00110 
<a name="l00111"></a>00111     camera.linkProperty(&amp;myWorker, <span class="stringliteral">&quot;Input image&quot;</span>);
<a name="l00112"></a>00112 
<a name="l00113"></a>00113     myWorker.linkProperty(<span class="stringliteral">&quot;Output image&quot;</span>, imageCanvas);
<a name="l00114"></a>00114     imageCanvas.linkSelectedRectangle(myWorker, <span class="stringliteral">&quot;input rectangle&quot;</span>);
<a name="l00115"></a>00115     imageCanvas.linkSelectedPolyline(myWorker, <span class="stringliteral">&quot;input polyline&quot;</span>);
<a name="l00116"></a>00116 
<a name="l00117"></a>00117     <span class="keywordflow">return</span> app.exec();
<a name="l00118"></a>00118 }
<a name="l00119"></a>00119 
<a name="l00121"></a>00121         
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